overstock

verb (used with object)

1. to stock to excess: We are overstocked on this item.

noun

2. a stock that is larger than the actual need or demand.

verb (tr)

1. to hold or supply (a commodity) in excess of requirements
2. to run more farm animals on (a piece of land) than it is capable of maintaining

v.1640s, from over- + stock (v.). Related: Overstocked; overstocking. The noun is attested from 1710.